P1783 – Transmission Over-Temperature (Ford)

Description

P1783 Ford indicates the transmission temperature has exceeded safe limits.

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Symptoms

  • Overheat warning
  • Limp mode
  • Harsh shifting

Causes

  • Overheated fluid
  • Cooling failure
  • TFT sensor fault

Diagnosis

  • Check fluid temperature
  • Inspect cooler
  • Test TFT sensor

Repair

  • Service fluid
  • Repair cooler
  • Replace TFT sensor